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US Navy NR Boatswain's Mate rd Class Cody Black and Boatswain's Mate Seaman Donovan Applewhite stand by to chock and chain an SHF helicopter. en PACIFIC OCEAN Dec Boatswain's Mate rd Class Cody Black and Boatswain's Mate Seaman Donovan Applewhite stand by to chock and chain an SHF helicopter from the Chargers of AntiSubmarine Helicopter